Jeremiah 9:3-5

3They bent their tongues like their bows; lies and not faithfulness prevail in the land, for they proceed from one evil to another, and they do not take me into account. This is the Lord’s declaration.

4Everyone has to be on guard against his friend. Don’t trust any brother, for every brother will certainly deceive, and every friend spread slander.

5Each one betrays his friend; no one tells the truth. They have taught their tongues to speak lies; they wear themselves out doing wrong.